IBM DB2 vs Riak: What are the differences?
Developers describe IBM DB2 as "A family of database server products developed by IBM". DB2 for Linux, UNIX, and Windows is optimized to deliver industry-leading performance across multiple workloads, while lowering administration, storage, development, and server costs. On the other hand, Riak is detailed as "A distributed, decentralized data storage system". Riak is a distributed database designed to deliver maximum data availability by distributing data across multiple servers. As long as your client can reach one Riak server, it should be able to write data. In most failure scenarios, the data you want to read should be available, although it may not be the most up-to-date version of that data.
IBM DB2 and Riak can be primarily classified as "Databases" tools.
"Rock solid and very scalable" is the top reason why over 5 developers like IBM DB2, while over 9 developers mention "High Performance " as the leading cause for choosing Riak.
Riak is an open source tool with 3.24K GitHub stars and 530 GitHub forks. Here's a link to Riak's open source repository on GitHub.
According to the StackShare community, Riak has a broader approval, being mentioned in 15 company stacks & 10 developers stacks; compared to IBM DB2, which is listed in 7 company stacks and 9 developer stacks.